Cleaning heads pipes with brick cleaner

[charles_reed]

Butyl hose in 1.5 inch bore can be as much as £10 per metre. Brick acid is about £5 per 5 litres, which would last for years. The HCl we buy in the Med is roughly £0.40 per 500 ml.

The deposits are largely carbonates, mostly magnesium, some calcium plus several others. Seawater is quite a complex mixture of salts.

Butyl Hose , Vyv.

Now that is really pushing out the boat - most chandlers over here offer double-walled spiral wound plastic for replacement - about €5.55/m.

Still, I thought we'd all agreed that no chemicals will clear that part from swan neck to outlet. That can only be got out by regular removal and mechanical action
The comparison in cost terms is ridiculous, the comparison in inconvenience is all-important.
A replacement outlet for my boat costs about €12 cut to size - only trouble is that it's much more difficult to handle that the old one cleaned out.

 

[vyv_cox]

Butyl Hose , Vyv.

Now that is really pushing out the boat - most chandlers over here offer double-walled spiral wound plastic for replacement - about €5.55/m.

Still, I thought we'd all agreed that no chemicals will clear that part from swan neck to outlet. That can only be got out by regular removal and mechanical action
The comparison in cost terms is ridiculous, the comparison in inconvenience is all-important.
A replacement outlet for my boat costs about €12 cut to size - only trouble is that it's much more difficult to handle that the old one cleaned out.

I was sold some spiral wound butyl hose in La Rochelle some years ago. I was assured that it would last for ten years without smelling. It was very expensive indeed but the cost seemed worth it. Installing it was by far the most difficult job I have ever done on the boat, due to extreme stiffness and being rather larger diameter than its predecessor. It never got to the stage of smelling because it became clear that the inner liner leaked, corroding the wire and dropping rust out of the end.

 

[LadyInBed]

Success
To boat today after three weeks of pickling in hydrochloric acid.
I had left the top of the pump off and noted that the pump barrel had filled, it was empty when I left it, so put in the pump plunger and applied some pressure. Got some resistance but could feel and hear liquid moving through, so extracted plunger and repeated process, this time with more sustained pressure. All of a sudden pressure gave way and I was 'in business'
Reassembled and pumped water through, left it with some more acid in the pipe applied via the bowl, but this time only for a couple off days.